Adjustable chair



( No Model.) 2 Sheets-Sheet 1.

O. H. KNIGHT.

ADJUSTABLE CHAIR.

No. 445,183. Patented Jan.27,1891.

.P lllllIIllIllIlIIlllllIIllllIl ATTORNEY (No Model.) 2 Sheets-Sheet 2.

C. H. KNIGHT.

ADJUSTABLE CHAIR.

No. 445,183 Patented Jan. 27, 1891.

% WIT/VESj/O INVE/VTUH ATTORNEY THE uoams'reu'zks col, mmo-Lrmm, WASHINGTUN, u c.

llirnn 'rArns PATENT OFFICE.

CI'IARL IS ll. KNIGHT, OF RONDOUT, NEIV YORK.

ADJ USTABLE CHAIR.

SPECIFICATION forming part of Letters Patent No. 445,188, dated January 27, 1891.

Application filed March 12, 1889. Serial No. 302,976. (No model.)

T 0 all whom it may concern:

Be it known that I, CHARLES ll. KNIGHT, of Rondout, in the county of Ulster and State of New York, have invented a certain newaud useful Improvement in Adjustable Chairs, of which I declare the following to be a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

This invention is an improvement in adjustable chairs; and the invention consists of an adjustable chair having its parts constructed, arranged, and combined substantially in the manner herein described and claimed.

In the accompanying sheet of drawings, Figure 1 is a side elevation of the chair; Fig. 2, a rear view, partlyin section and with parts broken away; Fig. 3, a partial front view; Fig. 4, a plan; Fig. 5, a vertical section in the planes 9; as, Fig. 4; Figs. 6 and 7, sections of leg-rest, showing foot-rest in different positions; Fig. 8, rear view of leg-rest; Fig. 9, section in the planes y y, Fig.

Similar letters of reference indicate like parts in the several views.

This invention relates particularly to easy or invalid chairs, in which for the comfort of the occupant the back, foot-rest, and other parts maybe made to assume convenient angles. Aside from the comfort afforded by such a chair, it is desirable that the adjustment of its several parts should be acco1nplished without much effort and without necessarily leaving the chair. To arrive at these results, my chair is constructed with the front and rear legs a a and a a, which extend upward and support the arms Z) I). To the inner surfaces of the front legs a a are pivoted at their upper ends metal bars A A. To the lower part of these bars is fixed a leg-rest B, and to the inner faces of the back legs a a are pivoted the back posts 0 C, so that these back posts may turn freely on the pivots which unite them to the back legs of the chair. To metal plates 0 c, projecting beyond the lower ends of the back posts,is pivoted the rear part of the seat-frame D, the front part of this seat-frame being also pivoted to the metal bars A,before mentioned.

To a front brace E of the chair is pivoted a quadra-nt-shaped plate F, the curved edge of the quadrant being grooved, and to a brace G, near the rear of the chair, is ceutrallyfixed a plate (Z, in which is a slot e, and to this brace G is pivoted at one end a tripping-bar f, the other end of this bar having fixed to it a vertical rod g, which passes up the side it of the chair and terminates in a hook or handie 7;.

To the front end of the seat-frame D is hinged or pivoted a fork II, between the limbs of which is received the quadrant-plate F. This fork has fixed to it a rack-bar I, which extends rearward and through the slot 6 in the plate (I and over the upper surface of the tripping-bar f.

To each side of the quadrant F is pivoted a bar J, and these bars, being also pivoted to the front of the seat-frame D, form a connecting-link between this and the quadrant, and also fixed to the quadrant F and at its rear side is one end of a chain K, which passes into the groove in the curved side of, the quadrant, the other end of the chain being fixed to the upper part of the back of a panel L. For this chain obviously a small cable or other suitable tie might be substituted. This panel L is constructed to slide up and down between the sides of the leg'rest B and behind i-t. Between the sides of the panel L referred to is also a sliding panel Z. To the lower part of the panel L is hinged a footrest M. This foot-rest has pivoted to it or to its sides a panel 172, which forms part of the foot-rest. The face of the leg-rest B is cut away, as at u, into which cut-away part may be received the foot-rest M when that rest is turned up so as to lie flat against the face of the leg-rest, and this cut-away part, when the panel Z is pushed up, permits the foot-rest panel on to be passed into the space so formed and be so adjusted for the better accommodation of the occupant.

To the rear ends of the arms I) b are pivoted or hinged bars N N. These bars maybe strictly called the back posts proper, and between these hinged back posts lie the back posts C C, which form substantially a panel for the back, and to which is fixed the headrest of the chair. These back posts C O are provided with pins 0 0, which enter into slots 1) p in the pivoted bars N N.

To the back posts 0 C in any suitable lllillb ner or to a panel between the posts may be fixed an adjustable head-rest P. This rest consists of a frame 7', to which is pivoted a panel B, arranged to swing in and out of the frame r and so assume ditferent degrees of inclination, to which it is held by adjustable pawls s s, entering into the frame of the rest and operated by the hands by means of projections t t. This panel B is preferably upholstered and the lower part padded for additional comfort.

WVhen my chair is constructed substantially as above described, it is operated in this wise: The back of the chair being vertical or at right angles to the seat, and the legrest being in a similar position, in order to adjust its back and its leg-rest to a degree of inclination that will afford greater ease to the occupant the knob or handle it is pulled upward, thereby operating the vertical rod g, this in turn raising the tripping-bar f, bringing that bar in contact with the rack I, thereby raising that bar until the teeth in it clear the lower side of the slot 6 in the plate d. Then by pressing with the feet on the footrest M the panel L is forced outward from the sides of the leg-rest B, and in that operation it tautens the chain K, which in turn causes the quadrant-plate F to turn on its pivot and byits movement through the con nection of the links or bars J J, which unite the quadrant to the seat-frame, theseat-frame D, is moved outward, and to some extent upward, which movement causes the pivoted back posts 0 O to incline backward,theback posts N N moving with them and supporting them by reason of the pins 0 0 in the slots 1) p, and at the same time the movement of the seatframe just described causes the leg-rest B to incline outward, and when the desired inclination of back and leg-rest is reached they are held in position by releasing the knob lo, which disengages the tripping-bar f from the rack-bar I, and so permits that bar to again engage in the slot 6 of the plate cl, and so on from time to time, as different adjustments may be desired.

hen the chair is provided with the headrest before described, that head-rest may be permanently or removably secured to the back of the chair, and its adjustment in the manner described, as is apparent, is wholly independent of the adjustment of the back and leg-rest before mentioned.

Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is.

1. In an adjustable chair, the combination of the back, the leg-rest hinged to the front of the chair-frame and provided with a sliding foot-rest, the movable seat pivoted in 2. In an adjustable chair, the combination of the back hinged to the rear of the chairframe, the leg-rest hinged to the front of the frame and provided with a sliding foot-rest, the seat pivoted to the back and to the legrest, and the quadrant pivoted to the frame below the seat and connected with the seat by a pivoted link and with the sliding footrest by a tie K, all constructed and operating substantially as and for the purpose de scribed.

In an adjustable chair, the combination of the back comprising the posts 0 O, pivoted near their lower ends to the rear part of the tie-frame, and the bars N N, also pivoted at their lower ends to the frame and at their opposite ends by sliding pivots to the posts 0 O, the leg-rest B, pivoted to the front part of the frame and provided with a sliding panel L, the seat D, pivoted to the posts 0 C and to the leg-rest, and the pivoted quadrant F, connected with the panel L by the chain K and also connected with the seat, all constructed and operating substantially as and for the purpose described.

4. In an adjustable chair, the combination of the back, the hinged leg-rest, the swinging seat pivoted to the leg-rest, the pivoted quadrant, the tie K, connecting the quadrant with a slide in the leg-rest, the pivoted link connecting the quadrant with the seat, all operating as set forth, and the bar H, whereby the several parts are locked in different positions, substantially as and for the purpose described.

5. In an adjustable chair, the combination of the back, thehinged leg-rest, the swinging seat pivoted thereto in front and other- .wise properly supported, the quadrant pivoted to the frame below the seat and connected with the seat by the bars J J, the tie K, connecting the quadrant with a slide in the leg-rest. the bar H, connected at its front end with the seat, the latch-plate d, with which the rear end of the bar I-I engages,

and the trippingbar provided with a suitable handle, all constructed and operating substantially as and for the purpose described.

6. In an adjustable chair, the head-rest consisting of the combination of the rectangular frame or panel B, with a covering of cloth stretched across it and attached to the opposite sides of the frame and with a roll or cushion formed at its lower side, and the brackets forming, with the cross-bar uniting them, the frame r, the panel being pivoted at its lower side to the brackets and provided with catches to engage with the brackets and holdthe panel at different degrees of inclination, substantially as and forthe purpose described.

CHARLES H. KNIGHT.

In presence of DANIEL B. S'row, WILBUR L. HALE. 

